You can learn a lot from repetition, and from competition. That is exactly why the Pittsburgh Steelers sicced Antonio Brown on Artie Burns a year ago when they drafted the junior cornerback in the first round. They wanted Burns to take his lumps and see him come out on the other side better for it. And he has.
And so have many others. One of them is Alejandro Villanueva, who, according to his quarterback, really credits former Steelers outside linebacker James Harrison for helping him to develop his game during the early portions of his tenure with the team while he was trying to learn the tackle position at the professional level.